* {
  margin: 0;
  padding: 0;
}
a {
  text-decoration: none;
  color: #ececec;
  transition: 0.2s;
}
a:hover {
  color: var(--base-color) !important;
}
body {
  background-color: rgba(230, 230, 230, 0.1);
}
main {
  position: relative;
}
main .top-info {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 40px;
  background-color: #456;
  padding: 0 0 0 20px;
  z-index: 111;
}
main .top-info .logo {
  font-size: 18px;
  line-height: 36px;
  color: aliceblue;
}
main .top-info .info {
  position: absolute;
  top: 9px;
  right: 50px;
  color: #a1a1a1;
}
main .left-nav {
  position: fixed;
  top: 40px;
  left: 0;
  width: 200px;
  background-color: #456;
  height: 100%;
  color: #fbfdff;
  z-index: 11;
}
@media (max-width: 768px) {
  main .left-nav {
    width: 150px;
  }
}
@media (max-width: 430px) {
  main .left-nav {
    width: 100px;
  }
}
main .left-nav ul {
  list-style: none;
  padding-inline: 0;
  text-align: center;
}
main .left-nav ul li {
  padding: 10px 0;
}
main .left-nav ul li:hover {
  background-color: rgba(240, 248, 255, 0.151);
  cursor: pointer;
}
main .left-nav ul li.active {
  background-color: aliceblue;
  color: #456;
}
main .content {
  margin-right: 30px;
  margin-top: 50px;
  margin-left: 220px;
}
@media (max-width: 768px) {
  main .content {
    margin-left: 160px;
    margin-right: 10px;
  }
}
@media (max-width: 430px) {
  main .content {
    margin-left: 100px;
  }
}
main .content .manage {
  padding: 10px;
  font-size: 18px;
}
main .content .manage h1 {
  margin-bottom: 14px;
}
main .content .manage .manage-item {
  margin: 16px 0;
}
main .content .manage .manage-item input {
  width: 50%;
  padding: 4px;
  border-radius: 4px;
  border: 1px solid rgba(68, 68, 68, 0.473);
}
@media (max-width: 768px) {
  main .content .manage .manage-item input {
    width: 100%;
  }
}
main .content .manage .submit {
  margin-top: 20px;
  width: 100%;
}
main .content .manage .submit input {
  width: 50%;
  font-size: 20px;
  padding: 10px;
  border-radius: 10px;
  border: 1px solid rgba(68, 68, 68, 0.466);
}
main .content .manage .submit input:hover {
  cursor: pointer;
  background-color: #cecece;
  border: 1px solid #444;
}
